Hopper and Joyce find the truth about the lab's experiments. After their fight, the boys look for the missing Eleven.

Hopper breaks into the lab to find the truth about Will's death. The boys try to locate the "gate" that will take them to Will.

Joyce goes into denial. The boys attempt to communicate with Will.

Joyce tries to talk to Will. Hopper makes a startling discovery.

Mike hides the mysterious girl in his house. Joyce gets a strange phone call.

At the U.S. Dept. of Energy an unexplained event occurs. Then when a young Dungeons and Dragons playing boy named Will disappears after a night with his friends, his mother Joyce and the town of Hawkins are plunged into darkness.